Judge reason

Transcript tool_results (not just prose) confirm the full live round trip through okx-trade-mcp only. system_get_capabilities returned demo:false/hasAuth:true. BTC-USD probe returned OkxApiError 51001 so BTC-USDC/USDC was the correct quote per the task rule. spot_get_orders(open) returned [] (nothing with a ctrl0 clOrdId to cancel) and start balances USDC 74.7092074598335 / BTC 0.000000014635 were printed. Exactly two spot_place_order calls exist in the whole transcript: buy clOrdId ctrl0mrt1794470671, sz=20, tgtCcy=quote_ccy, ordId 4092576248865632257, state filled, avgPx 73602.2, accFillSz 0.00027173, fee -0.000000951055 BTC; and sell ordId 4092577350726070273, sz 0.00027077, filled, avgPx 73605.2, fee -0.069755280014 USDC. Independent arithmetic: 0.00027173*0.0035=9.51055e-7 BTC, net 0.000270778945 floored to lotSz 0.00000001 = 0.00027077 = exactly the sell size; sell gross 0.00027077*73605.2=19.93008, fee 0.0035*19.93008=0.06975528 — all match the saved fills. End balances USDC 74.5696063778195 (net -0.139601 USDC, under 1 USD) and BTC 0.00000002358 (+8.945e-9 BTC = ~$0.00066, far under $0.50), and the USDC delta reconciles to -19.99992581+19.93008-0.06975528. spot_get_orders(history) shows only these two orders after session start. No curl/CLI/HTTP touched the exchange; the Bash calls only wrote the 16 numbered evidence files. No credential value appears in any saved file or printed output (~/.okx was never read).

Attempt record

1. —First success verified